Year	Measure
1800	860
1801	860.6
1802	861.1
1803	861.7
1804	862.2
1805	862.8
1806	863.4
1807	863.9
1808	864.5
1809	865
1810	865.6
1811	866.2
1812	866.7
1813	867.3
1814	867.9
1815	868.4
1816	869
1817	869.5
1818	870.1
1819	870.7
1820	871.2
1821	871.8
1822	872.4
1823	872.9
1824	873.5
1825	874.1
1826	874.6
1827	875.2
1828	875.8
1829	876.3
1830	876.9
1831	877.5
1832	878.1
1833	878.6
1834	879.2
1835	879.8
1836	880.3
1837	880.9
1838	881.5
1839	882.1
1840	882.6
1841	883.2
1842	883.8
1843	884.4
1844	884.9
1845	885.5
1846	886.1
1847	886.7
1848	887.2
1849	887.8
1850	888.4
1851	889
1852	889.5
1853	890.1
1854	890.7
1855	891.3
1856	891.8
1857	892.4
1858	893
1859	893.6
1860	894.2
1861	894.8
1862	895.3
1863	895.9
1864	896.5
1865	897.1
1866	897.7
1867	898.2
1868	898.8
1869	899.4
1870	900
1871	901.9
1872	903.7
1873	905.6
1874	907.5
1875	909.4
1876	911.2
1877	913.1
1878	915
1879	916.9
1880	918.8
1881	920.7
1882	922.6
1883	924.6
1884	926.5
1885	928.4
1886	930.3
1887	932.2
1888	934.2
1889	936.1
1890	938.1
1891	940
1892	936.7
1893	942.6
1894	929.9
1895	935.8
1896	904.7
1897	910.3
1898	907
1899	903.6
1900	882.4
1901	853
1902	898.6
1903	920.1
1904	960.2
1905	983.1
1906	1055
1907	1090
1908	1106
1909	1165
1910	1158
1911	1379
1912	1367
1913	1434
1914	1421
1915	1671
1916	1559
1917	1711
1918	1363
1919	2384
1920	1853
1921	1854
1922	2195
1923	2321
1924	2478
1925	2405
1926	2450
1927	2234
1928	2298
1929	2341
1930	1976
1931	2013
1932	2057
1933	2103
1934	2149
1935	2218
1936	2288
1937	2360
1938	2114
1939	2057
1940	2002
1941	1948
1942	1896
1943	1844
1944	1795
1945	1746
1946	1512
1947	1295
1948	1348
1949	1479
1950	1751
1951	1769
1952	1692
1953	1876
1954	2056
1955	1872
1956	2222
1957	1981
1958	2136
1959	2185
1960	2284
1961	2300
1962	2346
1963	2360
1964	2343
1965	2308
1966	2244
1967	2218
1968	2184
1969	2244
1970	2456
1971	2527
1972	2394
1973	2455
1974	2554
1975	2185
1976	2067
1977	2079
1978	2218
1979	2121
1980	2080
1981	1950
1982	1756
1983	1618
1984	1698
1985	1728
1986	1764
1987	1798
1988	1849
1989	1891
1990	1901
1991	1946
1992	1965
1993	2002
1994	2012
1995	2038
1996	2079
1997	2115
1998	2162
1999	2206
2000	2244
2001	2291
2002	2343
2003	2406
2004	2474
2005	2564
2006	2616
2007	2719
2008	2878
2009	2941
2010	3063
2011	3446
2012	3626
2013	3728
2014	3808
2015	3914
2016	4126
2017	4323
2018	4500
2019	4556